How does the shut-off valve work on the DE DIETRICH MS 24 BIC boiler?

Question

Accepted Answer

The shut-off valve (or stopcocks) on the DE DIETRICH MS 24 BIC boiler is a hydraulic isolation system that allows you to cut off the supply and return of hot water from the heating circuit. This valve is generally located on the pipe connection crosspiece (accessory provided) or in the hydraulic group integrated into the boiler. It actually exists in two stopcocks: one on the heating supply and one on the heating return.

Main function: These stopcocks allow for the quick isolation of the boiler from the heating system without having to drain the entire circuit. This isolation is essential for carrying out maintenance, cleaning, repair, or replacement operations on the boiler without interrupting the general water supply of the building or installation.

Practical use: To drain the boiler as an example, you must first close the boiler's stopcocks, then open the drain valve (with a 5 mm wrench on the heating supply valve body, or with an 8 mm wrench on the pipe tap located at the bottom of the boiler). Once the operations are completed, the stopcocks must be reopened. You can identify the stopcocks by their specific handle or lever on the pipe connection crosspiece.

Advantages of this design: This shut-off valve prevents the complete draining of the heating circuit, thereby reducing the risks of limescale deposits and clogging of the heating elements. It also facilitates recurring mandatory annual maintenance operations, including cleaning filters, descaling, and replacing normal wear parts, without complex actions on the general installation.

Important points: The pressure of the heating circuit of your MS 24 BIC must remain between 0.7 and 1.5 bar when cold. If you need to leave the boiler inactive for a long time due to the risk of freezing, the integrated antifreeze function may automatically activate if the supply temperature drops below 5°C. Regularly check that the stopcocks are in good condition and do not leak to maintain the system's tightness.

User manual DE DIETRICH Boiler : user manuals and guides in PDF

Models DE DIETRICH Boiler most viewed

Other categories DE DIETRICH

Recent questions about Boiler DE DIETRICH